12568942264321 has 2 divisors, whose sum is σ = 12568942264322. Its totient is φ = 12568942264320.

The previous prime is 12568942264253. The next prime is 12568942264331. The reversal of 12568942264321 is 12346224986521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10868758368400 + 1700183895921 = 3296780^2 + 1303911^2 .

It is a cyclic number.

It is not a de Polignac number, because 12568942264321 - 2²¹ = 12568940167169 is a prime.

It is not a weakly prime, because it can be changed into another prime (12568942264331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6284471132160 + 6284471132161.

It is an arithmetic number, because the mean of its divisors is an integer number (6284471132161).

Almost surely, 2^{12568942264321} is an apocalyptic number.

It is an amenable number.

12568942264321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12568942264321 is an equidigital number, since it uses as much as digits as its factorization.

12568942264321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9953280, while the sum is 55.

The spelling of 12568942264321 in words is "twelve trillion, five hundred sixty-eight billion, nine hundred forty-two million, two hundred sixty-four thousand, three hundred twenty-one".